Sample LJ-1
NavDat sample number 33097 · RHYOLITE
Sample
| Sample ID | LJ-1 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 35.8698 |
|---|---|
| Longitude | -106.57 |
| Location | Valles Caldera |
| State / province | New Mexico |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 0.523 | 0.4707 | 0.5753 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75.5 | WT% | XRF | |
| TIO2 | 0.14 | WT% | XRF | |
| AL2O3 | 13.42 | WT% | XRF | |
| FEO | 1.05 | WT% | XRF | |
| MNO | 0.06 | WT% | XRF | |
| MGO | 0.33 | WT% | XRF | |
| CAO | 0.62 | WT% | XRF | |
| NA2O | 3.94 | WT% | XRF | |
| K2O | 4.88 | WT% | XRF | |
| P2O5 | 0.03 | WT% | XRF | |
| LOI | 2.44 | WT% | XRF | |
| TOTAL | 100.1 | WT% | XRF | |
| RB | 212 | PPM | XRF | |
| SR | 27.2 | PPM | XRF | |
| Y | 57 | PPM | XRF | |
| ZR | 118 | PPM | XRF | |
| NB | 62.9 | PPM | XRF | |
| MO | 5.4 | PPM | XRF | |
| BA | 136 | PPM | XRF | |
| PB | 28 | PPM | XRF | |
| SC | 2.4 | PPM | INAA | |
| CR | -1 | PPM | INAA | |
| ZN | 20 | PPM | INAA | |
| CS | 7.2 | PPM | INAA | |
| LA | 39.9 | PPM | INAA | |
| CE | 79.7 | PPM | INAA | |
| ND | 23 | PPM | INAA | |
| SM | 5.9 | PPM | INAA | |
| EU | 0.218 | PPM | INAA | |
| TB | 1.21 | PPM | INAA | |
| YB | 5.8 | PPM | INAA | |
| LU | 0.928 | PPM | INAA | |
| HF | 5.3 | PPM | INAA | |
| TA | 6.3 | PPM | INAA | |
| TH | 30 | PPM | INAA | |
| U | 8.4 | PPM | INAA | |
| SR87_SR86 | 0.70538 | TIMS | ||
| ND143_ND144 | 0.512448 | TIMS |
References
- Spell, Terry L; Kyle, Philip R; Thirlwall, Matthew F; Campbell, AndrewR (1993) Isotopic and geochemical constraints on the origin and evolution ofpostcollapse rhyolites in the Valles Caldera, New Mexico. Journal of Geophysical Research, vol.98, no.B11, pp.19,723-19,739, 10Nov 1993 doi:10.1029/93JB01569